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Finding the Fourth Proportional to 18,413.92, 27,614.67 and 12,869.88

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Solution

The fourth proportional to 18,413.92, 27,614.67 and 12,869.88 is: 19,300.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,413.92 : 27,614.67 = 12,869.88 : x
  2. Step 2: Convert to fraction form
    18,413.92/27,614.67 = 12,869.88/x
  3. Step 3: Cross multiply
    18,413.92x = 27,614.67 × 12,869.88
  4. Step 4: Simplify right side
    18,413.92x = 355,397,489.14
  5. Step 5: Solve for x
    x = 355,397,489.14/18,413.92
  6. Step 6: Final answer
    x = 19,300.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.